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Products that do what Lessons learned from my 10 year open source project does
I've been developing SpiderFoot (an OSINT/recon tool) for 10 years now, so wanted to share my story and try to distill some lessons learned in the hope they might be helpful to others here who might be considering writing/open-sourcing their own tools. Here's the post: https://medium.com/@micallst/lessons-learned-from-my-10-year-open-source-project-4a4c8c2b4f64 And the repo if you want to check it out: https://github.com/smicallef/spiderfoot -- TL;DR version of lessons from the post.. Lesson 1: Writing open source software can be very…
- 1LA
I've been working on Lurnby for 2 years. It's kind of like a mix of pocket + kindle + anki. It lets you => add add epubs, pdfs, and web articles to the app => highlight and add comments => tag and organize highlights => review them with a spaced repetition system Today I made the decision to open source the project. I'm passionate about helping other people learn to learn better and hope that this will allow a lot more innovation in the tool and the space. I'm very new to open source and development in general really, but looking forward to receiving the guidance of the community.
2022 · github.com
- 2SC
Have been working on this for months, hope you guys will like it. Feel free to share your own side project in the comments.
2012 · sideprojects.com
- 3SA
I am aged 11 and founder of https://sprout9.net/ a platform for students to find great tutors. Please forgive me if I get this wrong and post it incorrectly. I would like fellow hackers to give me some constructive feedback on my MVP please. Ideas and suggestions as how I can improve my version 1.0 and how I can get the word out so I can help many students as possible. Thanks alot! Azaan
2021
- 4LS
Kicked my course off today - grep101.com - with lessons starting Monday. I think I've got the pricing right to attract a good class of keen learners for this first run through...
2012
- 5FA
Hey Friends, I always considered doing a show HN about this but never took the jump but since we're in the Show HN carnival I decided to share it. I wrote a free and open source quick guide to teach Firefox OS application development. With this ebook you go from zero to a little application in the Firefox Marketplace. https://leanpub.com/quickguidefirefoxosdevelopment/ I created this to give away at hackathons and hack days because the Mozilla docs were spread all over the developer hub, mdn and the wiki so it was hard for new developers to find what they needed. The…
2014
- 6MP
My weekly(ish) video logs tracking my progress of building a completely sound statically typed language and structural editor. The motivation is to make lots of invalid programs unrepresentable.
2022 · petersaxton.uk
- 7IB
You know that old TI calculator you used in high school, then put in a box and forgot about? Have you ever wished you had an operating system for your calculator with preemptive multitasking, dynamic memory management, a tree filesystem conforming to the FHS, and all the comforts of Unix? Well, good news: that's totally a thing that exists. I've been working on my kernel for about three and a half years now and I'm looking for new contributors to help out. It's written entirely in z80 assembly, and it's both challenging and fun to work on. There's an IRC channel for contributors or people…
2014
- 8IB
As a software engineer, my reflex has always been to script everything I can. Scripting is easy, but everything around it is tricky: scripts have to run somewhere, they need access to credentials, they need to be monitored. None of it is simple. No-code automation platforms such as Zapier or IFTTT are too restrictive for technical tasks; CI/CD platforms make it easy to script tasks related to a repository, but are limited when trying to do anything else. I wanted the low level control you have when writing scripts while retaining the comfort of a platform managing execution for me. So I…
2022 · exograd.com
- 9MS
I have finally convinced my son to take a step forward to publish something in public domain. As he is learning Python these days, he made a scraper to download Cambridge past papers (GCSE / IGCSE). If you like it, encourage the kid by pressing the Star button :) https://github.com/UsamaKashif/CambridgePastPapersDownloader
2019
- 10FP
A little background. For the last 1.5 years I lost what could be considered an embarrassing amount of money hiring other people to work on a project that I thought had potential, I got some important people involved, had some great coders, but couldn't launch. The failure was depressing, rejection by YC didn't help.. I had to take a job, I didn't enjoy and I had a girlfriend who stood by me despite going into debt. But bouncing back over the last 45 days I've taught myself Rails some Jquery, and Javascript and built this www.hangout.io. It's empowering to build something myself because I'm…
2011
- 11IB
After years of struggling with onboarding to new projects, I got tired of spending weeks just trying to grasp the basics of a codebase. The README rarely tells the whole story, and "just read the code" isn't practical for large repos. I built RepoIQ to create personalized learning paths through any GitHub repository. It analyzes the codebase structure, identifies key components, and creates a step-by-step guide tailored to your learning needs.
2025 · repoiq.be
- 12LA
Hello HN, I am building a devtool to understand existing codebases. The idea originates from my time at big tech as well as various attempts to get involved in open source projects. When I was in college I wanted to improve my coding skills by contributing to opensource projects. I would pickup a bug or feature request but I always found myself stuck at the very first step. I did not understood where and how to begin contributing. I once submitted a patch in firefox which was labeled "Good first issue" but that was still very handheld. The assigner told me exactly which files I need to…
2024 · lucidcode.ai
- 13IW
Hello! I just published a book on Site Reliability Engineering. https://www.amazon.com/dp/B09QNZC2LL This book is a collection of 28 chapters on SRE concepts, such as observability, monitoring, Service Level Objectives (SLOs), alerting, resilience and debugging. I adapted each chapter from blog posts I've written over the last 4 years. Most of the chapters detailed concepts that I applied while working at $dayjob, so they are 100% proven in real business settings :) ------ Some info on the backstory. Last year I started writing a book on my software development…
2022
- 14IM
I spent the past few weeks making an open source cloud code editing environment with an AI copilot and multiplayer collaboration! It's fully self-hostable in 5-10 minutes. There's a lot of minor improvements to be made, and some are already listed in the Github issues. Let me know what you think and feel free to try it out.
2024 · github.com
- 15IL
Sysadmin is my bread and butter, but I taught myself PHP and have been coding on and off for the past 6 years. I've worked on numerous freelance gigs, but mainly internal apps that I use for my real job. I worked on this project (on and off) for the past year and I'm happy to finally release it to the public. Even if it doesn't succeed, I'm happy that I was able to "scratch an itch" I've had for the past couple of years. I wanted to make something and prove to myself that I can program. I'm not the greatest, but I'm proud of what I've achieved. http://www.ikeepm.com
2011
- 16IB
Linux Foundation survey says 70-90% of modern software constitute OSS code. Yet we are stuck with tools that scan only for vulnerabilities in 3rd party libraries and that too with high degree of false positives. I built `vet` for policy and data driven analysis of 3rd party packages that goes beyond only vulnerability and allows codifying organisational policies related to OSS consumption. https://github.com/safedep/vet Looking forward to feedback and suggestions from HN :)
2023 · github.com
- 17DD
Myself and three friends, for the last year have been building our own side project, the aim of this side project was to show off the creative side of developers. One of my bug bears with Reddit is how quickly things get buried. The bug bear has turned into the basis for what I been building on the side called The Full Stack. A platform to show off developer projects basically. Another bug bear of mine over the years has been trying to find open source or just cool side projects to work on with others, and even find teams to join. So that's another thing we've built, an easy way to find…
2023 · thefullstack.network
- 18IB
I’ve spent the last 2.5 months building a product that runs LLM-powered code reviews on my pull requests — and I just launched it. The tool is built specifically for solo developers. You install it on your repo, trigger a scan by creating a pull request, and it leaves structured review comments using OpenAI under the hood. Funnily enough, I used the dev version of this app to review its own pull requests while building it. It helped me spot bugs, simplify structure, and keep quality high — all with minimal need for another human in the loop. Things I want to try out in the next months : -…
2025 · codii.dev
- 19IT
I created http://devtest.net as a weekend project, and I'm pretty proud of it from a technical and UI standpoint. The problem is, I've built this by myself in a bit of a vacuum, to "scratch my own itch", and I don't know if this is useful to anyone other than me. I'm also not so hot on the business side and don't really know what I'm doing. Basically, I'm looking for some advice, now that I've actually launched, what now? One thing that this has shown me is that I'm capable of putting together a pretty decent web application on my own in my spare time. Should I stick with this idea, or…
2012
- 20MM
I kept on reading you guys on how to do it, how not to do it. On January I started with thinkpython, learn python the hard way, mit course on programming, and every other python material I found. You just need to find the best resourse for YOU. I did Udacity's CS253 course, got my certificate and made my MVP! If your one of those guys like me, just get your ideas out there and the project will push you forward. Farm management software in South America is broken. We still have cd and downloadable updates. We've seen www.farmlogs.com and www.farmeron.com for USA and Europe. How about…
2012
- 21IB
I built a minimal opensource CMS, I use it myself for my blog and for other SaaS. l love blogging, and sometimes I post random thoughts on my blog. The only thing is, I always did it with .md files, which is fine too However, I was excited about the idea of using a CMS that was very minimal and avoiding the option of connecting something like WordPress or other big platforms. Open source (if you want to fork it or contribute) and free to use (unless I see you have a million views haha). Star the repo if you like it!
Jan 2026 · github.com
- 22TB
Hello everyone, I have always loved coding and in the couple I was thinking of making an open source project and it turned out to be awesome I hope you guys like it. I present Explore Singapore which I created as an open-source intelligence engine to execute retrieval-augmented generation (RAG) on Singapore's public policy documents and legal statutes and historical archives. The objective required building a domain-specific search engine which enables LLM systems to decrease errors by using government documents as their exclusive information source. What my Project does :- basically it…
Feb 2026 · github.com
- 23YA
I must say I was encouraged to post my project here when I saw the positive response to this post: http://news.ycombinator.com/item?id=3780731 Before you make any comments, please keep in mind that the project is written for fun. I'm not forcing anyone to use it. In fact, nobody should use the current unstable version in a serious project. Here is the link: http://github.com/bsg/libserv Please share your thoughts. All criticisms are welcome, even the harsh ones. p.s. The project is still a work-in-progress.
2012
- 24UI
Hey everyone! I am excited to share updates on four of my & my teams' open-source projects that take large-scale search systems to the next level: USearch, UForm, UCall, and StringZilla. These projects are designed to work seamlessly together, end-to-end—covering everything from indexing and AI to storage and networking. And yeah, they're optimized for x86 AVX2/512 and Arm NEON/SVE hardware. USearch [1]: Think of it as Meta FAISS on steroids. It's now quicker, supports clustering of any granularity, and offers multi-index lookups. Plus, it's got more native bindings than probably…
2023 · usearch-images.com
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